JPS6038706Y2 - sewing machine embroidery device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an embroidery device for a sewing machine in which the embroidery frame can be rotated and moved back and forth and left and right in conjunction with the operation of the original table to perform embroidery stitches with varying thread alignment angles.

Regarding this type of embroidery device, the present applicant previously proposed in Japanese Patent Application Laid-open No. 57-16955 (Japanese Patent Publication No. 59-9659), in which an embroidery frame is rotatably supported on one side of a mounting plate, and an embroidery frame is rotatably supported on the other side. The operation board for placing and fixing the original picture is attached to the shaft,
In addition, a transmission means is provided between the two to transmit the rotation of the operation plate to the embroidery frame, and by moving the operation plate relative to the stationary tracer so that the tracer traces the original image, the movement is transmitted to the embroidery frame. We proposed a device that allows the embroidery frame to rotate as well as move back and forth and left and right.

This device has the advantage that it is easy to rotate the embroidery frame and move it forward, backward, left, and right, making it easy to create an embroidery frame that matches the original image. When trying to embroidery, the direction of rotation is uncertain, so even if you hold the operation plate to prevent it from rotating, it is easy to rotate when you operate it back and forth, left and right, and you can embroidery with neatly aligned threads. It was difficult to obtain.

The present invention enables the above-mentioned device to restrict and release the rotational direction of the embroidery frame by switching the switching device, thereby producing an embroidery frame in which the angle of the thread alignment is changed and embroidery without the change in angle. be.

The embroidery device according to the present invention will be explained below. The one shown in the figure has the same basic structure as that shown in Japanese Patent Application Laid-open No. 57-16955 (Japanese Patent Publication No. 59-965), and has a presser bar 1. A movable rail 6 is supported perpendicularly to a fixed rail 3 fixed by a screw 2 by a sliding member 5 so as to be movable in the front-rear direction as well as in the left-right direction.

A mounting plate 8 is connected and supported by the wheat culm 7 at both ends thereof.

An annular support frame 11 having an embroidery frame 10 fitted inside a circular hole 9 formed on one side of the mounting plate 8 is rotatable by a plurality of rollers 12 circumscribed by a belt to be described later. A disk-shaped operation plate 13 is pivoted on the other side of the support frame, and an endless belt 15, preferably a timing belt, is provided between the operation plate and the support frame. Anti-slip belts are fitted into grooves 14 on each outer periphery, and the embroidery frame is rotated together with its support frame by rotating the operating panel.

Reference numeral 17 denotes a culm whose base is fixed to the fixed rail 3 and whose tip 18 is directed toward the original image placed and fixed on the operation board.

In the above-mentioned device, an example is shown in which a belt is used as a transmission means for transmitting the rotation of the operation plate to the embroidery frame. Alternatively, gears may be provided on the operation plate and the support frame for gear transmission.

Furthermore, instead of providing a support frame, a belt may be hung over the embroidery frame, and the embroidery frame may be directly rotated by rotating the operation panel.

Further, the sliding member that supports the movable rail so as to be movable in the vertical and horizontal directions has a sliding member such as a sleeve that is slidably engaged with the fixed rail, and a sliding member that is slidably engaged with the movable rail, which are orthogonal to each other. It can be replaced with an integrated one, and is commonly used in previous embroidery machines, instead of the above-described device including a fixed rail and a movable rail to move the mounting plate back and forth and from side to side.

Devices including orthogonally arranged guide rails may also be used.

Also, instead of being attached to a fixed rail, the culm is attached directly to the presser bar.
Alternatively, it may be fixed together with a bed, table, or other sewing machine frame, or separately.

Furthermore, instead of being rotatably supported by rollers as shown, the support frame may be supported by forming an annular projection on the mounting plate and rotatably fitting the support frame into the projection. Alternatively, it may be supported by a known bearing device.

When performing embroidery, press the operation plate 1 against the culm tip 18.
By moving the culm tip 18 so as to trace the original image placed and fixed on the operation board, the movement can be traced to the embroidery frame 1.
0, and the embroidery frame is rotated and moved back and forth and left and right.
It is similar to that described in No.-88981.

In the embroidery device constructed as described above, the present invention is arranged between the operation plate and the support frame, and one of the pair of rollers 12 on which the belt 15 is hung is attached to the nut 20 fixed to the mounting plate 8. The roller 12 is rotatably supported by a screw rod 21 to be screwed, and by rotating the screw rod with a screwdriver, a bundle, or any other operating means (not shown), the roller 12 is moved in the left-right direction and the belt is moved. 15 is crimped onto the outer periphery of the operating plate and the operating plate, thereby braking either or both of the operating plate or the supporting frame, or the roller itself is crimped onto either or both of the outer periphery of the operating plate via a belt. This is designed to restrict the rotation of the embroidery frame.

As described above, the roller 17 functions to hold the embroidery frame in a fixed state at the leftmost position in the figure, and it is also possible to adjust the tension of the belt by adjusting the amount of movement thereof.

Instead of being pivotally supported on a screw rod, the roller 17 is supported by a bell crank, or by pivoting the intermediate part on the tip of a lever that is pivoted on a mounting plate, and by operating the other end of the lever, the same effect as described above is applied to the roller by lever action. Alternatively, claws or other locking members may be used instead of the rollers.

In the case of using a bell crank or a lever, it is preferable to provide a stopper so that it can be restrained at a desired position, or to allow rotation adjustment in several stages, similar to known adjustment levers.

The same braking means as above can be used even if friction transmission is used to transmit the rotation of the operating plate to the embroidery frame, and if gear transmission is used, a pawl that removably engages with the gear can be used. The claws are arranged so that the operation plate or the support frame is restrained.

As described above, the embroidery device of the present invention has an embroidery frame that can rotate and move forward, backward, left, and right, but by switching the switching device, the rotation is restricted and the frame can only move forward, backward, left, and right. This device allows embroidery with different angles of thread arrangement and embroidery with uniform thread arrangement.

[Brief explanation of the drawing]

The figures show an embroidery device according to the present invention, with FIG. 1 being a plan view thereof and FIG. 2 being a sectional view thereof. 1... Presser bar, 3... Fixed rail, 5
...Sliding member, 6...Movable rail, 8
...Mounting plate, 10...Embroidery frame, 1
1... Support frame, 12... Roll, 13.
......Operation board, 15...Endless belt, 17
...Culm, 20...Natsuto, 21...
...screw rod.

Claims (6)

[Scope of utility model registration request] (1) A mounting plate 8 supported by a support device so as to be movable back and forth and left and right on the bed, and an embroidery frame 10 supported only rotatably by a holding device on an opening formed on one side of the mounting plate. , an operation plate 13 rotatably supported on the other side of the mounting plate and on which the original is placed and fixed, a transmission means for transmitting the rotation of the operation plate to the embroidery frame, and a sewing machine or other device. , an embroidery device for a sewing machine consisting of a culm 17 which is fixed to an instrument and whose tip 18 points toward an original on an operating plate, is provided with a switching device that restricts the rotation of the operating plate and allows it to freely rotate; An embroidery device that can switch between embroidery in which the angle of the thread alignment is changed and embroidery in which the angle of the thread alignment is not changed by a switching operation. (2) If the rotation of the operation plate is transmitted to the embroidery frame by belt transmission or friction transmission, the switching device is a braking device that acts on either the embroidery frame or its support frame and the operation plate, or both. An embroidery device according to registered claim (1). (3) When the transmission from the operation plate to the embroidery frame is via belt transmission, the braking device acts on the belt to make it possible to adjust the tension of the belt, and also to stop the belt from moving between the embroidery frame, its support frame, and the operation plate. The stabilizing device according to claim (2), which is a device for aligning rollers, pawls, and other engaging members that can be pressed together and whose positions can be adjusted. (4) The embroidery device according to claim (3), wherein the rollers, claws, and other engaging tools are attached to a screw rod screwed into a nut 20 fixed to the mounting plate 8. (5) The embroidery device according to claim (3), wherein the rollers, claws, and other engaging tools are attached to a bell crank or a lever that is pivotally supported by the mounting plate 8. (6) The embroidery device according to claim 1, wherein the switching device is a pawl that removably engages with the gear when the rotation of the operation plate is transmitted to the embroidery frame by gear transmission. .